发明授权
- 专利标题： Method for making dimeric azo pyridone colorants
- 专利标题（中）： 制备二聚偶氮吡啶酮着色剂的方法
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申请号： US10185828申请日： 2002-06-27
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公开(公告)号： US06576748B1公开(公告)日： 2003-06-10
- 发明人: Rina Carlini , James D. Mayo , James M. Duff , Jeffrey H. Banning , Paul F. Smith , George Liebermann , Roger E. Gaynor
- 申请人： Rina Carlini , James D. Mayo , James M. Duff , Jeffrey H. Banning , Paul F. Smith , George Liebermann , Roger E. Gaynor
- 主分类号： C09B3312
- IPC分类号： C09B3312
摘要：
Disclosed is a process for preparing a diazopyridone compound either (A) of the formula or (B) of the formula which comprises diazotizing a dianiline and coupling it with a pyridone or diazotizing an aniline and coupling it with a dipyridone.
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